Waterloo is the second studio album by the Swedish pop group ABBA, and the first released internationally. It was originally released on 4 March 1974 in Sweden through Polar Music. The album's title track won ABBA the 1974 Eurovision Song Contest and became a global hit, launching the group's career.

"Ring Ring" is a song by Swedish group ABBA, released as the title track of their 1973 debut album. The single gave the group their big break in several European countries (although the rest of Europe, North America and Australia would be introduced to ABBA the following year). The song was written in Swedish by Benny Andersson and Björn Ulvaeus, along with their manager Stig Anderson, with an original title of "Ring Ring (Bara du slog en signal)" ("Ring Ring (If Only You Called)"). Translation into English lyrics was helped by Neil Sedaka and his collaborator Phil Cody. The Swedish version reached No. 1 in the Swedish charts.